I know IANBU 😁
I very seldom buy new clothing. If I do, a colleague usually comments, sometimes with slightly barbed edges e.g. she wouldn't wear something like that, or I'm brave to wear this at my weight etc. We are both heavy. I'm wearing a new dress today which is markedly different from the clothing I usually wear. It is office appropriate!
Can I have a delicious reply for said colleague, please? We work quite closely so a gentle but pointed "wind your neck in" type reply would be useful, please.